22152223 has 2 divisors, whose sum is σ = 22152224. Its totient is φ = 22152222.

The previous prime is 22152209. The next prime is 22152239. The reversal of 22152223 is 32225122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22152223 - 2¹⁷ = 22021151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22152223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22152283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11076111 + 11076112.

It is an arithmetic number, because the mean of its divisors is an integer number (11076112).

Almost surely, 2^22152223 is an apocalyptic number.

22152223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22152223 is an equidigital number, since it uses as much as digits as its factorization.

22152223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 19.

The square root of 22152223 is about 4706.6148132177. The cubic root of 22152223 is about 280.8487131162.

Adding to 22152223 its reverse (32225122), we get a palindrome (54377345).

The spelling of 22152223 in words is "twenty-two million, one hundred fifty-two thousand, two hundred twenty-three".